Physics Classroom
The Physics Classroom: The Nature of a Wave
A very good introduction to the world of waves. Waves and wavelike motion, what is a wave, and categories of waves are the topics examined in this site. Many links to other wave sites.
Physics Classroom
The Physics Classroom: Energy Transport and the Amplitude of a Wave
The energy transport phenomenon and amplitude are explored in this lesson. Questions are found at the end of the lesson to check understanding of the concepts presented.